ABS Ultimate X9: Core 2 Extreme Hits a Speed Bump
by Jarred Walton on August 18, 2006 1:35 PM EST- Posted in
- Systems
Noise and Power
We've looked at how the system performs, but another aspect of performance that needs to be addressed is the noise and power requirements. We tested the ABS system at stock, overclocked, and underclocked speeds in both idle and 100% load situations. We then measured power draw and noise levels created by the system. 100% CPU load was achieved by running two instances of Folding@Home along with the Splinter Cell: Chaos Theory benchmark. Performing video encoding or other CPU intensive tasks while playing a game will achieve a similar CPU load. We also provided a CPU-only stress test to show the difference between 100% CPU load and 100% CPU + GPU load. The CPU load was achieved by running the two Folding@Home instances without starting any games or other tasks.
Noise results basically showed no difference between any of the clock speeds, as all of the fans run at a constant RPM. However, the water cooling fan does come with the ability to control fan speed, so we set that to minimum for idle testing and maximum speed to show the difference in noise levels.
It should come as little surprise that increasing the CPU speed requires more power. However, the system is designed such that noise levels are relatively constant. This is certainly not a silent system, but neither is it terribly loud, even at maximum fan speed. At minimum fan speed, the system does become nearly silent, which is particularly impressive when you consider the amount of noise normally generated by two X1900 cards. If your typical use of the system will not place it under heavy stress, you can use the fan speed control to dramatically lower the noise levels. We would recommend cranking up the fan speed for gaming sessions, however, as the GPUs and CPU will definitely put out a lot of heat. Besides, with all the noise from your speakers, the importance of reducing fan noise is greatly diminished.
The power results are interesting, as they show both the efficiency of the Core 2 CPU as well as the inefficiency of the X1900 GPUs. Going from 100% CPU load to 100% CPU + GPU nearly doubles the total system power draw. In other words, the two GPUs consume as much power together as all the remaining components. Needless to say, even at the heavily overclocked setting, power requirements are still lower than your typical NetBurst system, but we're now waiting for energy efficient GPU designs to go along with the lower power Core architecture.
Another interesting aspect of the power requirements for the Core 2 Extreme is that EIST (Enhanced Intel SpeedStep Technology) was able to function even at overclocked settings. The default CPU speed is 11 x 266, or 2.93 GHz. EIST allows the CPU to run at a 6X multiplier, resulting in a clock speed of 1.6 GHz. At the overclocked settings, the CPU runs at 3.5 to GHz under load, but drops to 1.92 GHz when idle. Now even overclockers can take advantage of energy-saving technologies. In case you were wondering, the idle power results for the "E6700" and X6800 are identical because the CPU throttled down to 1.60 GHz in both cases.
We've looked at how the system performs, but another aspect of performance that needs to be addressed is the noise and power requirements. We tested the ABS system at stock, overclocked, and underclocked speeds in both idle and 100% load situations. We then measured power draw and noise levels created by the system. 100% CPU load was achieved by running two instances of Folding@Home along with the Splinter Cell: Chaos Theory benchmark. Performing video encoding or other CPU intensive tasks while playing a game will achieve a similar CPU load. We also provided a CPU-only stress test to show the difference between 100% CPU load and 100% CPU + GPU load. The CPU load was achieved by running the two Folding@Home instances without starting any games or other tasks.
Noise results basically showed no difference between any of the clock speeds, as all of the fans run at a constant RPM. However, the water cooling fan does come with the ability to control fan speed, so we set that to minimum for idle testing and maximum speed to show the difference in noise levels.
The power results are interesting, as they show both the efficiency of the Core 2 CPU as well as the inefficiency of the X1900 GPUs. Going from 100% CPU load to 100% CPU + GPU nearly doubles the total system power draw. In other words, the two GPUs consume as much power together as all the remaining components. Needless to say, even at the heavily overclocked setting, power requirements are still lower than your typical NetBurst system, but we're now waiting for energy efficient GPU designs to go along with the lower power Core architecture.
Another interesting aspect of the power requirements for the Core 2 Extreme is that EIST (Enhanced Intel SpeedStep Technology) was able to function even at overclocked settings. The default CPU speed is 11 x 266, or 2.93 GHz. EIST allows the CPU to run at a 6X multiplier, resulting in a clock speed of 1.6 GHz. At the overclocked settings, the CPU runs at 3.5 to GHz under load, but drops to 1.92 GHz when idle. Now even overclockers can take advantage of energy-saving technologies. In case you were wondering, the idle power results for the "E6700" and X6800 are identical because the CPU throttled down to 1.60 GHz in both cases.
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yyrkoon - Friday, August 18, 2006 - link
Ah sorry, forgot to add, or ask rather, why do tech sites such as yours review OEMs anyhow ? Server equipment I can see, but a gaming / desktop system, I could never understand. Most people who read your site are very technical, and while I cannot speak for everyone, I think its personally a waste of time for you, and your readers(since most of us build our own systems anyhow). Also, again while I cannot speak for everyone, all my systems have_to_be stable, and when I build my own system, they usually either start off stable, or get fixed in the building the system (ironing out flaky software issues). I do not see how a OEM, who is serious about thier product, can put out something that isnt stable, I mean they have a hell of alot more resources than the average Joe such as myself, and yet, ever system I've built over the last 6-8 years (been building my own systems since 92 or earlier) has been 100% stable, usually from the get go. Then again, those of us who are tech savy, know that you never skimp on 3 parts EVER, Motherboard, memory, and PSU . . .JarredWalton - Friday, August 18, 2006 - link
I don't think ABS intentionally skimped on anything here. The problem is simply that they're working on the bugs on a design - I'm not sure if the GPU watercooling is actually coming on any systems right now, but they have said that a new GPU cooling solution should be ready in a month or so.As for why we review OEM systems, I tried to make that clear in the intro. 1) Not all people build their own PCs. 2) Core 2 is currently a bit difficult to find at retail, and you have a better chance of getting it in an OEM system As for the readers, trust me when I say there are a LOT of readers that never read the comments section or post here; with literally millions of readers (Anand could give actual numbers), we basically cater to every corner of the market.
Speaking of 100% stability, I'd wager a lot of systems would be somewhat unstable under the extreme test scenario we used. Two instances of Folding@Home along with running games (real games and not just a demo loop or 3DMark) for hours on end can cause problems on a lot of the overclocked "100% stable" enthusiast systems. I've had Dell and other OEM business computers take a dive in such a scenario.
Xenoid - Saturday, August 19, 2006 - link
Although not all people build their own computers, I'm sure that if you set up a poll, you'll see that a huge majority here do, so spending all the time on this article is just good comedy for me to laugh at what 13 year old's father is going to buy this for his kid so he can play Counter-Strike on while running 5 viruses simultaneously.As for the stability under 2 instances of F@H with a game on for hours at end... I'm sorry but who on this website is purchasing a computer here for NASA? Anyone? We're not counting the extreme nerds running F@H for a few years until they manage to lose their virginity. Running math programs for hours on end is not exactly my idea of fun or productiveness. There's a huge difference between stability and "stability in case of a nuclear meltdown while running 30 instances of F@H while your wife is screaming at you and your kids are playing with matches".
Stability for most of us means we can run a few programs (a media player, a game, a bittorrent program, a trillian-esque program, and a few other things) while focusing on the game experience and making it top notch and not crashing.
And I wouldn't doubt the ability of a Dell or other OEM business computer to take dives in any situation. That's why most of us don't buy OEM. We like to know how it's getting put together. If you need any more go find some pictures of those Apple laptops that used to ignite themselves and what they looked like inside.
JarredWalton - Saturday, August 19, 2006 - link
Most people may not plan on running two instances of Folding@Home while playing games, but doing an SMP capable video encode (i.e. DivX) while running a game would place a similar stress on a system. Do you all want to know that a system can run stable under moderate use, or do you want to know that it is truly stable? I suppose we could just run SuperPi 32M once, and if the system completes without errors it must be fully stable, right?Who really knows what programs are going to be like in another year or two -- we might get games that can fully stress both processor cores on their own, along with completely stressing the GPUs. Certainly there are no current games that do that, as Quake 4 tops out at around 75% CPU usage with two cores and that's higher than Oblivion and Call of Duty 2.
Anyway, what else are people going to use quad core or even octal core systems to run at home? At least with Folding@Home people can feel that their computer is doing something potentially useful with its spare clock cycles rather than just consuming electricity. It's also somewhat humorous that you talk about all of the people here who build their own systems and then make fun of the "extreme nerds" that run Folding@Home. (Most "normal" people in the world would consider both parties to be "extreme nerds", but I digress.)
The bottom line is that you can't call a system 100% stable and less you truly stress test the system. As any experienced overclocker can tell you, there are really only two types of systems in the world: those that appear stable because they have not crashed yet, and those that you know are at least somewhat unstable because they have crashed. Under the right conditions, I think the vast majority of computers are at least partially unstable. I guess that's okay, though, and we should all return to the days of Windows 95 when daily reboots were practically required?
Still, the system I'm writing this on is a socket 754 3200+ Newcastle overclocked to 2.42 GHz, and it routinely runs for weeks on end without rebooting. About the only time I reboot is when I have to install one of the updates from Microsoft. It also runs Folding@Home 24/7 in the background. If that eventually causes my CPU to fail, it will probably be time to truly upgrade anyway. (Odd that I haven't switched over to one of my newer systems, but this one just does everything I need it to do, other than intense gaming. It's kind of nice to have a computer where I don't need to worry about gaming performance, as probably 95% of my computer crashes that have occurred in the past five years happened when I was playing a game.)
yyrkoon - Saturday, August 19, 2006 - link
Yeah games cause alot of crashes on PCs but thats not to say its the hardwares fault. If it happened all_the_time then possibly, but the random crash once in a blue moon should not be attributed to hardware issues (atleast IMO).Re-read the post above where I said my PCd frequently stay up for months on end . . .;)
yyrkoon - Saturday, August 19, 2006 - link
PCs, sorry, you guys really need an edit function heheheyyrkoon - Friday, August 18, 2006 - link
Well thats kind of harsh on any system, running all those apps at once, but I've always been in the school of thought that IF you're going to game, game, and dont try to run 500 application all while doing so. If you really want to crash ( or maybe just CTD a game), run Oblivion ;) Still. if you managed to crash any system running all that, I would consider that a software issue (OS, or appliction), and not hardware.As for ABS intentionally skimping on hardware, well, all it takes is a little research, and all those worries go away (usually). I did notice they are using a tier 1 motherboard, which is probably a good idea, but I will bet any one of us could build the same system for half the cost. Anyhow, with sites such as yours, reviewing motherboards, memory, and such, there is no excuse for anyone really, to buy 'crappy' equipment, hell, I only paid $54 usd for my current motherboard (AM2 system), but its very solid . . . care to guess who made it ? At any rate, its merely a steping stone in the dirrection of where my system will be this time next year.
Anyhow, what I consider 100% stable, is a PC that is used normally (which for me, I use my systems all day everyday), for gaming, and work, and able to stay up for months on end without having to reboot (not including installing drivers, etc.), BSoD, or crash applications constantly. I havent seen a BSoD on any of my systems in a long time (years?), because of hardware issues. This is not to say I'm special, this is just to say that even in windows, its very possible to build a rock solid system (in-exspencively), with uptimes approaching Linux server status, you just need to pick your hardware carefully. Overclocking shouldnt even be used in the same sentance as stable in my opinion, these systems MAY run fine for a few years, but OC'n will usually eventualy kill a system, and I consider it a good thing, if systems last well past 3-5 years.
Now, to be honest, I must say I only skimmed this article, since I'm really not interrested in OEM systems (well, I usually recommend Dell to clients for a cheap OEM systems, depends on needs), but I personally havent had any problems finding C2D CPUs (except for the 6800 extreme CPUs, which is out of my price range anyhow).
Now, if I may offer a suggestion, I personally think it would be cool if you guys linked these comment sections to your forums.
samuraiBX - Friday, August 18, 2006 - link
Hehe, thanks! I'm looking forward to the "I don't have to sell my kidney on e-bay" computers!